Slayton, Donald2018-06-212018-06-211973-03-09http://hdl.handle.net/2152.3/9395Correspondence from Deke Slayton to Dr. William Thornton in reference to the end of the Apollo space missions and an Apollo 17 patch insigniaDeke SlaytonCorrespondenceSpace MedicineApollo 17Dr. William Thorntonlogoinsigniapatch